What of moodledata? Does MoodleA have a moodledata and does MoodleB have a moodledata of it's own?
'know of existence' ... well, if reporting issues and poster doesn't provide true technical info about setup - the real setup (all of it) - then those who are trying to help are/could be sent off into rabbit chases which in turn if OP is asked to perform something could lead to all going down a rabbit hole!
Don't have time to play 'Elmer Fudd'. :|